23003261 has 4 divisors (see below), whose sum is σ = 24356412. Its totient is φ = 21650112.

The previous prime is 23003221. The next prime is 23003263. The reversal of 23003261 is 16230032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17480761 + 5522500 = 4181^2 + 2350^2 .

It is not a de Polignac number, because 23003261 - 2¹⁰ = 23002237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1353133 = 23003261 / (2 + 3 + 0 + 0 + 3 + 2 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23003263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676550 + ... + 676583.

It is an arithmetic number, because the mean of its divisors is an integer number (6089103).

Almost surely, 2^23003261 is an apocalyptic number.

It is an amenable number.

23003261 is a deficient number, since it is larger than the sum of its proper divisors (1353151).

23003261 is a wasteful number, since it uses less digits than its factorization.

23003261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353150.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 23003261 is about 4796.1714940148. The cubic root of 23003261 is about 284.4001377126.

Adding to 23003261 its reverse (16230032), we get a palindrome (39233293).

The spelling of 23003261 in words is "twenty-three million, three thousand, two hundred sixty-one".